Frank, great review. In addition to being thoughtful, it is also very well written. Your style manages to include both audiophile/head-fi types and general consumers as an audience which I think is quite an accomplishment. As to the PM-1, obviously you were using a very high-end portable device in the AK240 for your review. Did you also test the PM-1 out of a more humble portable such as an Iphone or Ipod. How well does it do with more modest source/amplification.

I did not use the phone but I tried it in a ipod touch and it sounded very goos. It also sounded excellent with the WA5 Woo reference system. It also sound fantastic with the Chord Hugo which wasn't available when I finished that review. Thank you for the comment and i tried to make it easy to understand. Glad you liked it